如何在 iPhone 上打开音乐（iPod 库）？
我已经知道如何在我的应用程序中继续在后台播放音乐。
我不想知道这个。
我想要这个。
如何在背景和背景中自动打开 ipot 音乐自定义时间的睡眠模式。
这对我来说是不可能的。
但这是可能的。并且没有越狱。
我想知道这一点。请帮我。
I already know how to keep play music at background in my app.
I don't want to know that.
I want this.
how to Automatically turn on ipot music in background & sleep mode at custom time.
it's thought impossible to me.
but that's possible. and no jail break.
i wanna know that. please help me.
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查看 iOS 文档中的以下后台任务指南
http://developer.apple.com/library/ios/#documentation/iphone/conceptual/iphoneosprogrammingguide/BackgroundExecution/BackgroundExecution.html
对可以执行的操作有限制在后台进行。某些支持音频、位置和 VoIP 的应用程序可以使用 UIBackgroundModes 键在后台运行。使用音频后台任务，在音频会话停止之前它不会被挂起。
您似乎不想在某个时间之前启动会话。您可以查看 beginBackgroundTaskWithExpirationHandler: 。
此外，如果您正在寻找定时闹钟，您可以随时为本地通知附加不同的铃声。
据我所知，没有“开箱即用”的方法可以满足您的要求。
Take a look at the following background task guide from the iOS docs
http://developer.apple.com/library/ios/#documentation/iphone/conceptual/iphoneosprogrammingguide/BackgroundExecution/BackgroundExecution.html
There are restrictions on what can be carried out in the background. Certain apps that support audio, location, and voip are allowed to run in background using the UIBackgroundModes key. With the audio background task, it will not be suspended until the audio session stops.
It seems that you don't want to initiate a session until a certain time. You could potentially look at beginBackgroundTaskWithExpirationHandler: .
Also if you are looking for a timed alarm, you can always attach a different tone to a local notification.
As far as I am aware, there is no "out-of-the-box" way to do what your asking.